$\frac{csc\left(t\right)}{cot\left(t\right)}-cot\left(t\right)$
$3+m+n+4+n+2m$
$\left(k+3\right)\left(k+8\right)$
$x^3+24x^2+144x$
$cos\left(60+\theta\right)$
$x^2+y^2-6x=0$
$\left(3x+3\right)\left(x+6\right)$
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